Aegina is an island in the Saronic Gulf. The capital and the main port of the island are named after it. In ancient times it was a settlement center of Peloponnesians, Aegeans and Myrmidons. Later, together with other naval cities, it belonged to the institution of Amfiktionia of Kalavria, participated in the naval battle of Salamis against the Persians and during the classical era was a city of the Achaean Confederation. The city of Aegina was the first capital of Greece. Today it is the second largest island in size, population and development of the Saronic Gulf.